﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.Web.Razor.Parser;
using System.Web.Razor.Parser.SyntaxTree;

namespace ICSharpCode.AspNet.Mvc.Completion
{
	public class RazorCSharpParserModelTypeVisitor : ParserVisitor
	{
		bool foundModelTypeName;
		
		public RazorCSharpParserModelTypeVisitor()
		{
			ModelTypeName = String.Empty;
		}
		
		public string ModelTypeName { get; private set; }
		
		public override void VisitSpan(Span span)
		{
			Console.WriteLine("Span.Kind: " + span.Kind);
			Console.WriteLine("Span.GetType(): " + span.GetType().Name);
			Console.WriteLine("Span.Content: '" + span.Content + "'");
			
			if (foundModelTypeName)
				return;
			
			if (IsModelSpan(span)) {
				VisitModelNameSpan(span.Next);
			}
		}
		
		bool IsModelSpan(Span span)
		{
			return span.Content == "model";
		}
		
		void VisitModelNameSpan(Span span)
		{
			if (span == null)
				return;
			
			string firstLineOfMarkup = GetFirstLine(span.Content);
			ModelTypeName = firstLineOfMarkup.Trim();
			foundModelTypeName = true;
		}
		
		string GetFirstLine(string text)
		{
			int endOfLineIndex = text.IndexOf('\r');
			if (endOfLineIndex > 0) {
				return text.Substring(0, endOfLineIndex);
			}
			return text;
		}
	}
}
